Symfony 2 Command Line

Symfony 2 Command Line

This well documented in Git/Packagist and also here in in the Symfony 2 documentation.
This post will go into more detail re running classes from the command line, but first a bit more information, re the example class that extends the Command class:


namespace Acme\DemoBundle\Command;

use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;

class GreetCommand extends Command
{
    protected function configure()
    {
        $this
            ->setName('demo:greet')
            ->setDescription('Greet someone')
            ->addArgument(
                'name',
                InputArgument::OPTIONAL,
                'Who do you want to greet?'
            )
            ->addOption(
               'yell',
               null,
               InputOption::VALUE_NONE,
               'If set, the task will yell in uppercase letters'
            )
        ;
    }

    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $name = $input->getArgument('name');
        if ($name) {
            $text = 'Hello '.$name;
        } else {
            $text = 'Hello';
        }

        if ($input->getOption('yell')) {
            $text = strtoupper($text);
        }

        $output->writeln($text);
    }
}

The parts in bold - specifically:

• The end of the class name GreetCommand,
• The parent folder - Command (and last item in the namespace path)

Must both be Command for the classes to be recognised by the app/console script without any further configuration.

Also the string parameter in the setName call should be checked and if necessary edited.

I was able to get custom commands working in Symfony 2.1 by:

1. Installing the component using Composer.
2. Creating the above php file - editing the value above as needed.

$ app/console --list

Symfony version 2.1.8-DEV - app/dev/debug

...

test

  test:greet                            Greet someone

  test:update                           Update someone